It is a historical city that was the capital of the Roman Empire, Byzantine Empire, Latin Empire. The name of the city, which was conquere by the Ottomans in 1453, was change to Istanbul by Turkey in 1934. During the Ottoman period, the name of the city was call Dersaadet, Konstantiniyye and Istanbul in three different ways. In the last periods of the Ottoman Empire, the use of names other than Istanbul was abandone. However, the name Kontantiniyye continue to be use by other countries. After the establishment of the Republic of Turkey, the name of the city was officially Istanbul. Over time, the city began to be called this way all over the world.
Istanbul’s capital history began 65 years before the East-West division of the Roman Empire. The Roman Emperor Constantine I Byzantion chose the new capital of the empire and renamed it New Rome (Latin: Nova Roma). From its earliest days, historians of the new capital call it Constantine’s City, after its founder; They began to call it Constantinople. Starting from the reign of Constantine the Great, Constantinople became the capital of the Roman Empire. The city became the capital of its successor, the Eastern Roman Empire, from AD 395, when the Roman Empire collapsed.
After the collapse of the Western Roman Empire, Constantinople became the capital of the state, which changed its name to the Byzantine Empire in time, in 395. Constantinople was also the brightest and wealthiest city in the world in the early middle ages.
With the conquest of Constantinople by Mehmet the Conqueror in 1453, the city became the capital of the Ottoman Empire. With the declaration of Ankara as the capital of the Republic of Turkey in 1923, it lost its 1600-year-old capital status.